Device for raising or lowering steamboat-stacks.



No. 635,487. Patented Oct. 24, I899.

A. JACOBS. DEVIGE FOB RAISING 0R LOWEBING STEAIIIBDAT STAGKS.

(Application filed Nov. 25, 1898.) (No Model.) 2 Sheets-Sheet I.

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No. 635,487. Patented Oct. 24, I899. A. JACOBS.

DEVICE FOR RAISING 0R LOWERING STEAMBUAT STACKS.

(Application filed Nov. 25, 1898.)

2 $heets8heet 2,

(N0 Model.)

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UNITED STATES ADAM JACOBS, OF EAST RIVERSIDE, PENNSYLVANIA.

DEVICE FOR RAISING OR LOWERING STEAMBOAT-STACKS.

SPEGIFIGATIONforming part of Letters Patent No. 635,487, dated October 24, 1899.

Application filed November 25,1898. Serial No. 697,360. (No model.)

To (LZZ whom it may concern:

Be it known that I, ADAM JACOBS, a citizen of the United States of America, residing at East Riverside, in the county of Fayette and State of Pennsylvania, have invented certain new and useful Improvements in Devices for Raising or Lowering Steamboat-Stacks; and I do herebydeclare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to certain new and useful improvements in a device for raising and lowering steamboat-stacks.

The invention has for its object the provision of a means of raising and lowering the smoke-stacks of steamboats. Usually such smoke-stacks are made in two separate sections hinged upon one another, and in passing beneath a bridge or other obstruction the upper stack-sections are lowered to a horizontal position, and after passing beneath the bridge they are again raised to a vertical position. With my improved method I form each stack of two telescopic sections, and by means of a system of ropes and pulleys I am enabled to lower the upper sections of both stacks down in vertical positions over the lower sections, and after the boat has passed beneath the bridge they may again be extended to their former position. The advantages of myinvention overthe present mode of lowering and raising steamboat-stacks are as follows: There being no shears, derricks, or fall-lines required, as at present, the expense of renewing the above items, being heavy, is thus saved. Under the present mode it requires eight men on the roof every time the stacks are lowered, which is very severe on said roof, (being canvas,) wearing out the same and thereby causing constant repairs.

Other new and novel features are employed in the construction and operation, as will be hereinafter more specifically described in detail.

In describing the invention in detail reference is had to the accompanying drawings, forming a part of this specification, and wherein like numerals of reference designate like parts throughout the several views, in which-- Figure 1 is a vertical front view of a plan with a crank 11 for revolving the same.

of smoke-stacks such as used upon steamboats and which are provided with my improvements. Fig. 2 is a side view of the same. Fig. 3is aview of a portion of one of the stacks shown in section. Fig. 4B is a top plan view of one of the stacks.

Referring to the drawings, the numerals 1 and 1 designate the lower sections of the two stacks and the numerals 2 and 2 the upper sections, the said upper sections being of such internal diameter as to easily fit over the lower sections and not interfere with the workings. To the lower edges of the upper stack-sections are attached suitable eyebolts 3, and connected to these eyebolts are the ropes 4t and 5, which run down to the lower hold-floor and pass beneath the pulleys 6 and 7 and then over the top of and wound about the drum 8. This drum is mounted upon a shaft 9, arranged in bearings 10, and is providZd t the upper ends of the lower stack-sections are arranged the two frames 12 and 12, and pivoted to the ends of these frames are the small pulleys 13 and 13'. Another pair of small pulleys 14 and 14 is pivotally arranged upon the edge of the ventilator-tubes 15, which extend from the lower deck up through the lower stack-section. Wire ropes 16 are connected to eyebolts 17, arranged at the lower inner edges of the upper stack-sections. These ropes pass over the aforesaid pulleys and connect to a balance-weight 18, which is arranged within the ventilator-tubes. To the under side of these balance-weights is attached a rope 19, which passes downward beneath the pulley 20 and aforesaid drum 8 and is wound upon this drum.

To lower the stacks, the operator revolves the drum in the direction as indicated by the arrow at Fig. 2, and as the ropes 4 and 5 are wound from over the top of the drum and the rope 19 from the under side in an opposite direction it is evident that they will all operate in the proper directions to lower the stack, and by revolving the drum in an opposite di* rection the stacks are raised.

Having thus fully shown and described my invention, what I claim as new, and desire to secure by Letters Patent, is-

In a steamboat, the combination with the lower stationary stack, the upper movable ICG In testimony whereof I have hereunto affixed my signature in the presence of two subscribing witnesses.

ADAM JACOBS.

stack telescoping therewith and the ventilating-tube located in said stationary stack and communicating with the hold, of the pulleys and ropes, the Windlass or drum and the counterbalance-weight located in said tube l and connected with the ropes secured to said movable stack, substantially as described.

Witnesses:

WM. A. GOLDEN, II. J. Davis. 

